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Exam 8: Acoelomorpha, Platyzoa, and Mesozoa: Flatworms, Gastrotrichs, Gnathiferans, and Mesozoans

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Question 31

Multiple Choice

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The monogenetic flukes

A) are mostly ectoparasites of fish.
B) are usually found in rabbits.
C) require an intermediate and a definitive host.
D) all of these

E) A) and B)
F) A) and C)

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Question 32

Multiple Choice

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The intermediate host of the blood fluke Schistosoma is a

A) fish.
B) human.
C) snail.
D) dog.

E) A) and B)
F) A) and C)

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Question 33

True/False

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Humans become infected with Taenia solium by eating insufficiently cooked beef.

Turbellarians have light-sensitive organs called _________________.

The traditionally accepted class Turbellaria is ___________ because some ectolecithal turbellarians should be allied with tematodes,monogeneans,and cestodes in a sister group.

Many rotifers can reproduce parthenogenetically.

Some characteristics of flatworms and ribbon worms are

Structures found in tapeworms but not in other flatworms are

The nervous system in planaria is

Gnathostomulids might most typically be found

The pseudocoel is derived from the embryonic _______________.

Flame cells are the primary excretory structures in rotifers. Multiple Choice Questions

Flatworms and cnidarians may have evolved from a common planuloid ancestor.

Trematodes have a body covering known as a _________________.

Most monogeneans are external parasites of ______________.

Rotifers have a unique ciliated crown known as the _________________.